I always found the humans everywhere stuff odd in sci-fi settings.

Also, I could picture it being an older model of such suits- big smokestacks on the back, and when running hot (aka running at a level of power consumption usually only seen in combat) it would be billowing smoke. Along with totally giving away their position in open areas and being a breathing hazard to some in more enclosed spaces, it could conceivably provide some degree of cover from enemy weapons fire.

But yeah, big, loud, noisy, belches smoke, and is probably annoying to find replacement parts for so she likely builds replacement chunks herself when she can. That would probably result in the occasional minor jam where she needs to really wrench the joint to move it past a certain point, etc.

Still helpful though! After all, having a mechanic who can simply flip up a car with one hand to reach the underside is... I don't wanna say handy here, since it's a really bad pun, but handy is the best word that fits.